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Submission #10108

# Submission time Handle Problem Language Result Execution time Memory
10108 2014-10-15T08:45:26 Z gs14004 On grid (kriii2_O) C++
0 / 4
 0 ms 2504 KB 
#include <cstdio>
#include <algorithm>
#include <deque>
using namespace std;

int a[301][301];
int sum[301][301];
int dp[301][301];
int r,c;

int mem[301][301];

void prep(){
    scanf("%d %d",&r,&c);
    for (int i=1; i<=r; i++) {
        for (int j=1; j<=c; j++) {
            scanf("%d",&a[i][j]);
        }
    }
    for (int i=1; i<=r; i++) {
        for (int j=1; j<=c; j++) {
            sum[i][j] = sum[i-1][j] + sum[i][j-1] - sum[i-1][j-1] + a[i][j];
        }
    }
}

int main(){
    prep();
    // mem[x][y] = dp[x][l] - sum[y][l] max (x < y)
    for (int j=1; j<=c; j++) {
        for (int i=1; i<=r; i++) {
            for (int k=1; k<i; k++) {
                dp[i][j] = max(dp[i][j], mem[k][i] - sum[k][i]);
            }
            dp[i][j] += 2*sum[i][j];
        }
        for (int i=1; i<=r; i++) {
            for (int k=i+1; k<=r; k++) {
                mem[i][k] = max(mem[i][k],dp[i][j] - sum[k][j]);
            }
        }
    }
    printf("%d",dp[r][c]-sum[r][c]);
}

Subtask #1
0.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2504 KB Output is correct
2 Incorrect 0 ms 2504 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0.0 / 3.0

# Verdict Execution time Memory Grader output
1 Halted 0 ms 0 KB -